I do not think numbers are relevant at all. I see there are some doubts about the numbers reported by LDS. What about the numbers reported by WBTS? How do we know they are reliable? My point is, the WBTS has not always been "correct" in quoting others. Also te NWT has translation "errors". Various doctrines had to be revised as they turned out to be "incorrect". But many other religous organisations have a similar reputation.
The topic was about preaching. Preachng is a good things, whether done by LDS or JW or any other CHristian denomination. Preaching can be done in many ways, as most important is to love your neighbor. It is good to tell people about the good news of the Kingdom, of Jesus etc.
But I do agree that the WBTS by far exeggerate the effectiveness of their preaching method. The nett growth is very small and compared to population growth, it is almost negligible. Again, for me it is not the numbers but as the organisation uses numbers to prove how successful they are, it shows they are not at all successful. On average (according to published numbers in Yearbook), it takes about 13000 hours of preaching to win one new person.
Last August the organisation organised (pushed) the, as they called it, largest preaching effort ever. Well, preaching, it was more a sales campaign to promote their website. I checked around and did not find any newspaper article mentioning this campaign. It is not uncommon or the organisation to use words like: historic event, unsurpassed, amazing etc, when referring to their works. In the new proclaimers book there is something about changing the way congregations are organised. The book refers to this change as an historic event.
The actual objective of the preaching work by JW's is not to proclaim the good news of the kingdom and of the king (Jesus) but to convert them to become JW's. That is why JW's preach to people from other Christian denominations, of whom, many already are aware of the kingdom. Most people do not want to become a member of a religious organisation. They in principle can be interested to learn about the bible and the kingdom, but that is it. And even much fewer people want to become a JW. As the objective is to convert people to become JW's, many people actually do not get to hear the good news if they indicate they do not want to become a JW. From there on, the JW will no longer visit the person.
In summary, if one is interested in large numbers, join the Catholic Church, the Anglican Church or convert to Islam or Hindu.
If one is interested to learn about the bible, start reading and search for good discussion forums and, if interested, visit a congregation that is not aiming to convert you to become a member and that in essence teach bible princples.
If one want to become a member of a religious organisation, do some research first to assess the impact of such membership on your daily life. All these memberships come at a price. Yes, in general JWs live a morally clean life and are also in principle honest to their fellow JW's and people in general, which may sound appealing to to others, in particular to those who feel alone or abandoned.